I saw that TB3403 compressor's maximum capacity is 430lbs (from compressor map) at 23psi of boost and 400lbs at 30psi of boost.
I know that on the exhaust side A/R is 0.63

What is the maximum bhp from a TB3403 (Escort Rs Cosworth T35 Turbo)?

I have seen over the internet dyno graphs with power up to 423hp from a YB engine. I have also seen that these engines are equipped with Hart/Autospecialists inlet manifold and 2wd exhaust manifold.


What is your opinion?

 

t34 .63 i think is basically the same as the escort t35
the power on the t34 .63 at max is around 400 ish but it may not last that long , as for inlet you can use the standard one with a spacer as an aftermarket one at this power level its not meant to be needed , exhaust manifold 2wd one better for big power 400 upwards

 

if you want around 400 + bhp go with a t38